- Other Rooms
- Lawn & Garden
- Deck & Patio
- Repair & Install
How to Cure Sweating WindowsBy: Danny Lipford
When the temp gets around 35 or below, my windows sweat really bad. It freezes around the frame and I have to scrape it off. Our home is 11 years old, but the windows have done this since it was new. My husband says it is the gas fireplace that we use that does it. I read that too much humidity would cause it, would a dehumidifier help? I have to go around every day and dry the windows. Can you help? -Carol
We get a lot of questions about windows sweating in the winter. Here’s what’s happening and why.
When air warms, it expands which allows it to hold more moisture. As it cools down, it contracts until it reaches the saturation point and releases this excess water in the form of condensation.
Common daily activities in your home—such as cooking, showering, using unvented gas heat, and even breathing—add moisture to the air. When this warm humid air comes in contact with cold window glass, it cools and condenses.
To reduce this problem you need to either lower the amount of moisture in the air inside your home, or prevent it from coming in contact with cold surfaces. Here are some suggestions that might help:
- If you are still having problems, consider installing a dehumidifier.
- How to Prevent Condensation on Windows (video)
- How to Remove Moisture from Insulated Windows (article)
Please Leave a Comment
56 Comments on “How to Cure Sweating Windows”
You can follow comments to this article by subscribing to the RSS news feed with your favorite feed reader.
We want to hear from you! In addition to posting comments on articles and videos, you can also send your comments and questions to us on our contact page or at (800) 946-4420. While we can't answer them all, we may use your question on our Today's Homeowner radio or TV show, or online at todayshomeowner.com.